Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K5879 found under Transformer Audio F by Keytronics Inc. The National Stock Number assigned to this part is 5950008571010, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K5879.